이전글 - Definition of Static Electricity https://jobong-nyonnyong.tistory.com/87Contact and Frictional ChargingWhen two insulating materials are rubbed together, the surfaces will have a net electric charge (총 합은 0이지만, 각각의 surface가 charge를 갖게 된다는 뜻인듯, 아래 그림 참조)Every material charges positively against materials below it in the table when the two are rubbed. = Triboelectrification = frictional cha..

Definition of Static ElectricityFor many years, it was known that if a piece of amber (호박 보석 실험으로부터 정전기를 발견) was rubbed, it acquired the ability to attract small bits of straw, paper, and such.According to the electron theory, materials are composed of three types of particles.Electrons, which carry negative electrical chargesProtons, which carry a positive electrical chargeNeutrons, which do no..

이전글 https://jobong-nyonnyong.tistory.com/85 l IntroductionDuring production, static electricity can cause (i) overload of electrical equipment, (ii) explosion in an operating room, (iii) there is always a shock risk, (iv) the product sticks to the machine, and breakage of fibers decreases the fabric strength.It can increase the production time.Different types of belts are being produced for spu..

l AbstractNo clear explanation for static potential generationMany factors that affect charge generationEnvironment (temperature, humidity)Structural (polymer type, structure of fabric)Working factors (fabric speed, tension, contact area between fabric and machine parts, and material type that is in contact with fabric)Static potential on a moving web can cause web breakage, ignition of flamma..

1976년에 Heeger를 포함한 몇몇 연구자들이 conducting polymer에 대한 발견을 함. Polymer doping을 통하여 물질을 완벽한 절연체에서 금속으로까지 성질을 변화시킬 수 있었음. 이러한 연구는 물리화학 분야에서 새로운 연구분야를 만들기도 하였음. Staudinger, Carothers 등 여러 연구자들에 의해 Nylon이 발명되는 등 1900년대부터 organic chemistry가 크게 발전하였음. 하지만 그들의 연구는 saturateed polymer에 대한 연구였기 때문에 electronic 재료 관점에서는 관련이 없었음. 즉 conducting polymer에 대한 연구는 진행되지 않음. Saturateed polymer: C 원자의 모든 전자가 공유결합에 쓰임 Conj..